Transformers Cybertron also has the group of Decepticons who stay loyal to Galvatron; Thundercracker, Ransack, Crumplezone, and Thunderblast. However, during the final battle, when they realize Galvatron was never going to spare them either, they abandon him too. Thundercracker even ends up happily working with the Autobots on the Space Bridge Project after Galvatron's death, until the other three shanghai him into their 'New Decepticon Army'.
The Spectacular Spider-Man has the Enforcers fill this role for the Big Man, while the Sinister Six (sometimes the whole team, sometimes just one or two members) do the same for the Master Planner, aka Doc Ock. Interestingly, the Enforcers are shown to report to their organization's Dragon, Hammerhead, while Electro, the Planner's Dragon, is merely the most powerful and loyal of the Six.
Super Robot Monkey Team Hyperforce Go! features the Sun Riders. Granted, they are ex-actors (and therefore used to trying to impress crowds). And hey, at least they have the dignity to save their posing for after they win.
In the Codename: Kids Next DoorAn Ass-Kicking Christmas, the Delightful Children From Down the Lane have the Faculty Four, who represent Substitute Teacher's Day to help their plot to Steal Christmas. Their members are Thesaurus Rex, a dinosaur made up of books, the Unintelligible Tutor, who's babbling incapacitates people, The Human Text, a flying humanoid made up of stacks of paper, and Mr. Fantastically Fit, a stretchy muscle man, led by Ms. Edna Ucation.